Nicknames for Hephaistion

If you think I am mad, just ignore this thread. But yeah, I really love the name Hephaistion. It's pronounced like general's name, Alexander the Great's close friend(I guess pronunciation is not an issue fr those who seen the 2004 movie "Alexander"). And, what's the most surprising, my boyfriend is on the board(either he really likes it or just thinks I have gone mad)
The only problem is the absence of obvious nicknames. Everyone in my family has a nickname so I really need one for Hephaistion. Can you please help me with it? Don't be afraid of stretch, I don't mind a bit. I would really appreciate some ideas since the name is so unusual and there is nothing I can get some help from besides Nameberry.